The Two-Bath method was made popular by Ansel Adams for extreme Contractions. It utilizes Kodak's D-23 formula listed above as part A, and the following formula as part B. Two-Bath Formula: Part B
The working temperature is 68 degrees.
The procedure for using this Two-Bath formula is as follows:
1. Agitate the film continuously for four minutes in part A (D-23).
2. Move your film to part B and let it rest there, without agitation, for three minutes.
The result of the Two-Bath method should be contrast reduction equal to approximately N-2. Two-Bath developer processes work because of the compensating effect described above. A classic variation of this procedure is the water bath development process.
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